Block 420000 - Blockchain Halving

[blockchain2020]

Block 420000 will be a pivotal event for Bitcoin.

The halving to 12.5 BTC, along with increased blocks, will see miners rewards come down and potentially fees drop.

This is the only forum where I'll post about the block halving expected to take place on 26 July 2016, and:

1. The risk to security and decentralisation of Bitcoin
2. Potential attack vectors due to miners reduced rewards, such as lower hash rate or greater centralisation due to industrial miners investing more in economies of scale.
3. Bigger blocks, without an increase in user transactions to generate more in fees.
4. Bitcoin full node incentives and alternative mining revenue using a Bitcoin overlay network
5. The stupid idea of permissioned ledgers and the distraction on using the Bitcoin blockchain
6. Speculation on the impact of BTC to fiat prices
7. I'm sure I'll add more......

[zju]

That's one possible scenario. There are plenty of other ones.